[sdiy] Favourite VCO designs

[Stewart Pye]

I sent this hours ago but I'm pretty sure it didn't get through....

David sent me some info on his VCO. It looks good so think I'll give 
that a go. Otherwise the ASM1 does look like a good candidate.
Thanks for the suggestions.

Stewart.


David G. Dixon wrote:
>> I believe David Dixon is working on a VCO that incorporates the SSM
>> based exponential converter. Correct me if I'm wrong, David?
>>
>> If it's finished it could turn out to be my favorite VCO.
>> The exponential converter design makes VCOs based on it very very stable.
>>     
>
> Thanks for the mention, Damian!  I just finished emailing Stewart privately
> to extol the virtues of said 2164 Expo VCO.  I've built four of them now
> (all sawcore -- two for me and two for a friend), and they are very nice.
> They never seem to drift or go out of tune, and are in tune from the moment
> they are switched on.  I personally will never build any other VCO -- I like
> them that much.  Of course, I really don't have anything else to compare
> them to except my (slightly modified and expanded) Thomas Henry VCO-1s,
> which are also very nice, but require tempcos and are not very stable.
>
> I'm also working on a tricore version which is functionally identical, but
> which will have a distinctly different, much more mellow sync character.
>
> One of these days, I will do a proper layout and have boards made, but for
> now, if you want one you either have to roll yer own PCB or have me send you
> a board.  I can even put together a board kit, if anyone wants one.
>
>
>